How many protons, neutrons, and electrons are in a neutral atom of Phosphorus, if its atomic number is 15 and its mass number is 30.97? 15 protons, 15 neutrons, 15 electrons
15 protons, 31 neutrons, 15 electrons
16 protons, 15 neutrons, 16 electron
15 protons, 16 neutrons, 15 electrons

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

If a solution had a ph of 7 what is the solution

Can someone me with 3 and 4 plz. this is for masteries test.